The speed of light cannot be reached Why the speed of light cannot be surpassed

The speed of light is not superimposable, that is, the speed of light is constant, which is a basic postulate of Einstein's special theory of relativity. It means that in a vacuum, the speed of light is about 300,000 kilometers per second, which is always constant, independent of the speed of the luminaire, the speed of the measurer, or the speed of the device that measures the speed of light. At the same time, this also shows that in the universe, there is a maximum speed of information transmission, which is the speed of light, and when any object transmits information, no matter what method is used, the speed of transmitting information cannot be greater than the speed of light, it is a limit speed.

In his research on the theory of relativity, Einstein assumed the principle that the speed of light does not change. As for why the speed of light does not change, Einstein did not give an explanation. At present, people have different ways to understand Einstein's assumption of the invariance of the speed of light, some of which are completely deduced from theory and understood with their own opinions.

For the speed is very large, to calculate the superposition of the speed to use the special theory of relativity speed change formula, the formula is very complicated, not easy to play, you can check it on the Internet or refer to the high school physics book.

Suppose you are one of the C2 and your time becomes longer for the original.

1 (1-(v c) 2) is about a multiple.

Actually, you see that the speed of the other party is about c.

This effect of longer time (the slow clock effect is not perceptible at very low speeds in daily life, so it is often overlooked).

If the speed of light is not reached, the formula for superposition of velocities in classical physics (e.g. when two objects travel in opposite directions their relative velocities is equal to the sum of their velocities) cannot be used for high-speed worlds, according to the theory of relativity, tell the world that the superposition formula for velocities is v=(v1+ or -v1*v2 c 2), and the answer to your question is 1 according to this formula.

Velocity is not stackable, which can only mean that the relative velocity of the two cars is c, not that their velocity has reached the speed of light cBesides, is the car that fast?

At present, faster-than-light is nothing more than a doctrine, and no one is sure that there is faster-than-light, but if theoretically speaking, faster-than-light exists, it can be deduced"Tired of crying"said the result. If you want to understand it further, you can read books such as "The Pond of Ripples" and "The Universe in the Shell". But now at least quasars have been found to be traveling faster than the speed of light, as well as the zero-point energy described in The Pond of Ripples.

If two vehicles are traveling in opposite directions, then the speed of the other vehicle observed from one vehicle is times the speed of light, and if two vehicles are traveling in opposite directions, the speed of the other vehicle observed from one car is one-sixth of the speed of light. Although the speed of light can be observed, the actual speed must be calculated.

Cannot reach the speed of light. In general, when an object is moving at a slower speed, we calculate this relative velocity by vector subtraction. However, when the object is moving at a high speed, it is necessary to take into account the reference frame and the relativistic effect.

If you think about it, it is still impossible to reach the speed of light in the cases mentioned above.

Because when matter moves close to the speed of light, the mass of matter will also approach infinity, so that the infinite mass plus no amount of force can produce acceleration, and it will not be able to increase the velocity.

One of the basic assumptions of special relativity is the principle that the speed of light does not change. Light is an object with a rapidly changing electromagnetic field. Since it is the result of the field, and the field is the cause of the force, the phenomenon of light should not be related to the frame of reference.

In other words, the speed of light should be constant for an arbitrary frame of reference.

As for the light emitted by the flashlight, when you run after it, your time will slow down, what you think of as a meter will become shorter, so you have a different concept of speed, when you measure light, the light is still that speed.

The speed of light

The speed of light and time are in a sense the same thing. If a photon travels 300,000 kilometers per second, if it only runs 150,000, then it is not that the photon has slowed down, but that the time is twice as fast as the earth's time. If the speed of light is measured to be reduced to 0, then your time begins to rewind even relative to Earth time, and you are the speed of light.

Although this is somewhat incredible, it is actually true, which is why no powerful particle accelerator can accelerate a particle to the speed of light, because particles have a mass at rest, and through the formula of mass velocity of special relativity, we find that when a particle with a mass at rest approaches the speed of light, its mass tends to infinity.

The infinite mass requires an infinite amount of energy to further speed up, obviously the energy in the universe is limited, and the infinite is fine, anyway, the whole universe has to be swallowed.

If the speed of light is reached, it will:

1. When a person reaches the speed of light, time may stop. According to the theory of relativity, the faster the speed, the slower the time, so when the speed of light is the maximum speed known in nature, when a person reaches the speed of light, that is, when the speed approaches infinity, it will cause time to approach zero infinitely, which means that time stops. But the stop here is only relative, not all objects stop, but your time is relatively slower.

2. People can live forever at the speed of light. It is also said above that when people reach the speed of light, it may cause time to stop, so when time stops, is it equivalent to eternal life at this time, but in fact, it is only relative that your aging becomes slow, and the slow is close to nothing, so it may cause your minute to be someone else's year, or even longer, but one day it will still age, because time does not really stop.

As to why the speed of light cannot be exceeded, this may be new to some people, but if you are familiar with Einstein's theory of relativity and the most famous formula e = mc 2, you will understand the limitations imposed by this equation. But why can't the speed of light be surpassed?

Sci-fi** warp velocities, hyperspace, or other means that allow a spacecraft to travel faster than the speed of light can be achieved over long distances. Unfortunately, physics shows that science fiction can't be a scientific fact because we can never exceed the speed of light.

Physicists talk about the speed of light, which is the speed at which light travels in a vacuum, such as in outer space. This speed is called "c" for short, and it is 299792458 meters and seconds (about 300,000 kilometers per second).

Albert Einstein's famous mass-energy equation

Why is it impossible to exceed the speed of light in a vacuum? The answer is Einstein's famous mass-energy equation. This equation shows that mass (m) and energy (e) are equivalent. This means that the greater the mass of matter, the greater the amount of energy it contains.

Crucially, this also means that the more energy a matter contains, the heavier it is. Motion is a type of energy (kinetic energy), so the mass of matter in motion is slightly greater than the mass at rest. For example, if you throw a ball at a speed of 100 mph (about kilometers per hour), its mass will increase grams.

Obviously, this increase is small, but as the speed gets closer to the speed of light, the increase in mass will become enormous. If a spaceship is traveling at 90% of the speed of light, it will have twice as much mass as it would have been at a relatively stationary point. This meant that the engines had to double their output to get the ship to accelerate.

But the higher the speed of the ship, the higher its energy and the greater the mass, which requires more energy to accelerate. At the same time, everything inside the ship is getting heavier and heavier, and the watch, which was only about 14 grams at rest, will now weigh about 36 tons.

If a spaceship reaches the speed of light, it will be extremely heavy and will require an infinite amount of energy to move it forward, which is obviously impossible. That's why nothing can reach the speed of light, let alone exceed it.

Is there a way around this limit?

There are ways to solve this problem. Some scientists believe that massless particles such as tachyons (or tachyons) can exceed the speed of light, which is the slowest speed of these particles. However, these are purely imaginary particles, and may not actually exist at all!

The speed of light is the fastest in the known universe, and it can be surpassed, and no one knows, but I think it can be surpassed, but in terms of special relativity, special relativity says that objects can't reach the speed of light. Because e=mc2, ek=p cTherefore, an increase in the velocity of the object (i.e., an increase in energy) means an increase in mass, so that when v is equal to or approximately equal to c, the inertia will increase to infinity, and the velocity of the object cannot be increased again.

But why Mo e=mc 2 and not some other velocity squared? Because the basis of special relativity is that the speed of light does not change. As for why the speed of light does not change, who can say why, except for the experimental data of the erroneous experiments of Mikelson-Morey and other experiments of the speed of light determination "with unavoidable errors"?

And the hypothetical health with the same speed of light is determined to propagate in what medium? Isn't it all the speed of light? Is it because the speed of light has its maximum speed in a vacuum?!

It's also because the speed of light is the fastest that can be measured, right?! Isn't that an opportunistic act?! Isn't it possible that in the future, when we find another speed that exceeds the speed of light, we can remove the constant speed of light and replace it with the same speed of "x"?

But the point is that Newtonian mechanics has limitations, and Einstein's theory has limitations!

The closer you get to the speed of light, the slower time becomes, and assuming that the speed of light is exceeded, time will rewind. In fact, this kind of thing will never happen. Because the closer you get to the speed of light, the greater the mass of the object itself, and the mass of an object moving at the speed of light becomes infinite, and the force that pushes it to accelerate also needs to be infinite.

Huh: Then again

Whether it can be transcended, it's like arguing about whether aliens exist or not, who knows

First of all, the speed of light is constant, 3 108 m s in any frame of reference, which was first introduced by Maxwell and has been proven by countless experimental observations. Einstein used this principle as the basis for the theory of relativity, and then derived it to give birth to the theory of relativity. In the theory of relativity, there is the inference that none of the instances can exceed the speed of light.

Because the dynamic mass of an object is as shown in the figure, when the velocity reaches the speed of light, the energy of the particle with static mass becomes infinite, so the speed of light can only be achieved by thinking of photons, which are examples of no rest mass. Of course, contemporary theories suggest that there are some virtual particles (which cannot be observed) that do not obey these.

How many years from now? How can humans truly approach and exceed the speed of light? If human beings cannot approach the speed of light in their entire lives, this may be a great blow to us, just because Einstein once said that the speed of any object with mass in the universe cannot exceed the speed of light.

The speed of light cannot be exceeded, which is one of the core ideas in Einstein's special theory of relativity.

However, we need to note that the speed of light limit in special relativity is preconditional, not that the speed of light can never be exceeded. Specifically, in an inertial frame, it is impossible for any information to travel faster than the speed of light, and the information here includes the speed of any object, after all, objects also belong to the category of information.

Note that there are two points here: the inertial frame and the information propagation velocity cluster. One of the presuppositions of special relativity is that it must be an inertial frame.

Theoretically, the speed of light is the ultimate speed in the universe.

1.Time is the fourth dimension, that is, time and length, width and height are a thing, and then you can understand the question you asked.

2.If you run diagonally forward at the same speed, you can decompose the velocity into straight and horizontal directions, and the velocity in both directions is less than v.

3.Before Einstein, Lorentz's explanation of Michael Morey's experiment with the so-called Lorentz transform could also explain the invariance of the speed of light, but it was not deep enough and not concise.

4.The greater the velocity of an object, the greater the mass, so that the acceleration of the force that causes it to move will be smaller, and when the speed is infinitely close to the speed of light, the mass tends to be infinite, so that the acceleration is infinitely close to zero, and it will never reach the speed of light.

5.The speed of light can be broken, and when a supernova is large, some high-energy blocks of matter will be thrown outward at a speed of superlight.

1. In terms of mass: when the speed of an object is equal to the speed of light, its moving mass is equal to infinity, so when the speed of a person exceeds the speed of light, his moving mass is greater than infinity, then his inertia is also greater than infinity. When he hits a planet, he can easily bomb it up and continue into the distance, and when he passes through a black hole, his path is not affected by the black hole.

2. From the perspective of time and space: if a person moves forward beyond the speed of light, then he looks back in the process of movement, and it is dark, because the light is not as fast as his and cannot shine on his eyes, while the starlight on the front will be brighter, because there is more light entering his eyes at the same time. Theoretically, he left Earth at superluminal speed, stopped at a great distance from it, looked at it with a super telescope, and could see what had happened before he left Earth.